Available Resolutions In Resolution Dialog

Is it possible to change the available screen resolutions in the resolution dialog? I have removed all other aspect rations except for 4:3 (which my project requires) and the available resolutions are 1024x768, 800x600, and 640x480. The only one I actually want accessible by the user is 1024x768. Is it possible to remove these others?

I've looked at the Player Settings and there doesn't seem to be any way to do this, but you could use something like this simple javascript to change the resolution to 1024x768 when the game starts:

function Start () {
Screen.SetResolution(1024, 768, false);
}

This just sets the screen's width to 1024, the screen's height to 768, and sets fullscreen to off, all at the game's start. (Change `false` to `true` to turn fullscreen on.)